CSF has over 5 decades of experience manufacturing radiators. So when it comes to keeping your engine cool and your E36 M3/3-Series running at its best, a CSF High-Performance All-Aluminum Radiator is the obvious choice. Designed to perform on the street or at the track, a performance radiator is a must-have for both high horsepower builds as well as race vehicles which need added cooling performance in motorsports environments.

This radiator features a 2-Row core with CSF's exclusive B-Tube Technology: Unlike a regular oval shape "O" type radiator tube, CSF uses a specially engineered tube in the shape of a "B". These "B-tubes" are carefully formed and then brazed over the seam to seal. CSF is able to use thinner and lighter aluminum material (with better cooling efficiency) because this design is actually stronger than normal "O" shape tubes that are welded.

The design (inlet in the middle of the tube that is seam brazed) increases the heat transfer surface area of the tubes by approximately 15% over regular tubes - producing the efficiency of two smaller tubes vs. one large tube within the same space criteria. With "B-tubes" you are able to get "dual liquid laminar flow". CSF also uses ultra efficient multi louvered fins that are carefully and precisely aligned to maximize airflow through each radiator core. Fin specifications are carefully measured and calculated for each application, and tested for maximum heat rejection efficiency in our wind-tunnel lab.

This Part Fits:

Year	Make	Model	Submodel
1998	BMW	323i	Base
1998-1999	BMW	323is	Base
1988-1995	BMW	325i	Base
1988-1995	BMW	325is	Base
1988-1991	BMW	325iX	Base
1996-1998	BMW	328i	Base
1996-1999	BMW	328is	Base
1995-1999	BMW	M3	Base
1995	BMW	M3	Lightweight

Cooling Products

CSF High Performance Aluminum Oil Cooler - E30

Hood Vents - Side - E9X M3

Hood Vent - Center - E30

Hood Vents - Side - E30/E36/E46

Hood Vents - Side - E46 M3

Hood Vent - Center - E36/E46/E9X

CSF 2 Row High Performance Aluminum Radiator - E46 non-M

CSF Radiator - E36 M3/320/323/325/328

Mishimoto Black Silicone Hose Kit - E46 Non-M

Mishimoto Black Silicone Hose Kit - E46 M3

Mishimoto Red Silicone Hose Kit - E36 325/M3

Mishimoto Black Silicone Hose Kit - E36 325/M3